(21/x)-(18/x-1)+2=0

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Solution for (21/x)-(18/x-1)+2=0 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

21/x-(18/x)+1+2 = 0

21/x-18*x^-1+1+2 = 0

3*x^-1 = -3 // : 3

x^-1 = -1

-1 < 0

1/(x^1) = -1 // * x^1

1 = -1*x^1 // : -1

-1 = x^1

x = -1

x = -1

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